کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9681025 1455509 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chromate removal from water using red mud and crossflow microfiltration
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Chromate removal from water using red mud and crossflow microfiltration
چکیده انگلیسی
Red mud was used as an adsorbent for removal of chromate ions from water using crossflow microfiltration. The chromate rejection is a strong function of feed dispersion pH, chromate and red mud concentration ratio, electrolyte concentration, membrane pore size as well as the concentration of co-ions such a sulfate ions used to adjust the dispersion pH. Under certain conditions, especially when pH = 5.2, the chromate rejection reached a maximum of 100% rejection. It was observed that the efficiency of the chromate removal increased with increasing red mud/chromate concentration ratio; however, the steady-state permeate flux decreased with an increasing red mud/chromate ratio. In the presence of chromate (at the same red mud concentration) and electrolyte (at the same chromate and red mud concentrations), permeate flux increased, although the chromate rejections decreased. Furthermore, it was observed that the rejection of chromate decreased with increasing membrane pore size. On the contrary, permeate flux increased with increasing membrane pore size. The method was found to be effective in removing chromate from water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 181, Issues 1–3, 5 September 2005, Pages 135-143
نویسندگان
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